EP0333688B1 - Rolle oder Zylinder für eine Papiermaschine oder für eine Maschine zur Fertigung von Papier - Google Patents

Rolle oder Zylinder für eine Papiermaschine oder für eine Maschine zur Fertigung von Papier Download PDF

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Publication number
EP0333688B1
EP0333688B1 EP89850084A EP89850084A EP0333688B1 EP 0333688 B1 EP0333688 B1 EP 0333688B1 EP 89850084 A EP89850084 A EP 89850084A EP 89850084 A EP89850084 A EP 89850084A EP 0333688 B1 EP0333688 B1 EP 0333688B1
Authority
EP
European Patent Office
Prior art keywords
roll
axle
mantle
liquid
paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89850084A
Other languages
English (en)
French (fr)
Other versions
EP0333688A2 (de
EP0333688A3 (de
Inventor
Juhani Eskelinen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valmet Technologies Oy
Original Assignee
Valmet Oy
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Filing date
Publication date
Application filed by Valmet Oy filed Critical Valmet Oy
Publication of EP0333688A2 publication Critical patent/EP0333688A2/de
Publication of EP0333688A3 publication Critical patent/EP0333688A3/de
Application granted granted Critical
Publication of EP0333688B1 publication Critical patent/EP0333688B1/de
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/022—Heating the cylinders
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0253—Heating or cooling the rolls; Regulating the temperature
    • D21G1/0266—Heating or cooling the rolls; Regulating the temperature using a heat-transfer fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor

Definitions

  • the invention concerns a roll or cylinder for a paper machine or for a paper finishing machine, in particular a calender roll, which can be heated.
  • Heated rolls are used in calendering immediately after drying or, in some cases, also in treatment taking place in the middle of drying.
  • heated rolls can also be used in supercalendering, which is a paper finishing step separate from the paper machine.
  • Some of the calender rolls are often provided with steam heating, because the temperature of the rolls affects the calendering so that a high temperature improves the smoothness.
  • variations occur which are derived from the wet end of the paper machine and from the drying section.
  • One mode of compensating for these defects is regulation of the temperature of the rolls at different points of the mantle in the transverse direction of the web.
  • a heated roll is not new, but such rolls-have occurred in prior-art solutions, in particular in calendering solutions.
  • the present invention is, however, novel and differs from prior-art solutions as well as provides a considerable improvement.
  • This solution comprises a roll which is provided with a stationary axle and with a mantle journalled on said axle, which said mantle can be heated from inside over almost all of its length by means of jets.
  • the cooling of the ends of the roll mantle is not arranged separately, and the roll is provided with means for control of the deflection of the roll.
  • a roll which is provided with a stationary axle and with a mantle journalled on said axle, which said mantle can be heated from inside by means of hot oil introduced through the intermediate space between the mantle and the axle. Moreover, the ends of the roll mantle can be cooled by means of an oil flow coming from the bearings.
  • the roll is provided with means for control of the deflection of the roll.
  • one end of the roll is warmer than the other, whereby the mantle becomes conical, which causes different calendering properties in the transverse direction of the paper web.
  • one problem is an uneven temperature of the mantle and deformations caused by the uneven temperature in the end regions of the mantle.
  • an uneven temperature causes an uneven calendering of the paper web as well as defects in the shape of the mantle, which defects are also seen as defects in the paper web.
  • the temperature profile of the roll is declining, which results in different calendering properties in the transverse direction of the web.
  • DE-A-30 14 891 discloses a roll for a paper machine into which roll fluids for controlling the temperature of the roll ends are introduced substantially axially of the roll through ducts in the roll mantle journals.
  • EP-A-0 210 388 discloses a cooling circuit for the bearing of the roll mantle on the axis of a paper machine cylinder or roll, said cooling circuit being separated from a heating circuit for the roll mantle.
  • the object of the solution in accordance with the present invention is to provide considerable improvements as compared with the prior-art solutions.
  • the object of the invention is above all to improve the construction of the heated roll so that the temperature profile of the heated roll in the transverse direction, relative the direction of running of the web, is as uniform as possible, whereby optimum calendering properties are achieved.
  • a further object of the solution in accordance with the invention is to eliminate any deformations of the end part by feeding of cold liquid from the ends.
  • the problems caused by uneven temperature profile in the prior-art solutions have been solved by means of even introduction of heat and by means of local corrections of temperature by introducing cold liquid through the axle journals.
  • Uniform spraying of liquid is theoretically the correct solution when it is desirable to obtain an even temperature profile, and the shape of the end can be regulated by means of the feed of cold liquid.
  • a further object of the invention is a solution that has a favourable cost of manufacture and a simple construction.
  • the solution in accordance with the present invention can also be applied to the drying cylinders in the drying section of a paper machine.
  • Figure 1 shows the construction of a heated roll in the direction of running of the web.
  • Figure 2 is a cross-sectional view of a heated roll.
  • a stationary axle 2 is constructed, which is supported on bearing housings 3, to which the axle 2 is connected by the intermediate of support parts 4.
  • the bearing housing 3 is fixed to the rest of the calender construction by means of fastening members 25.
  • One end of the axle 2 is provided with an opening 6 for the supply of hot liquid, through which the hot liquid is fed into the chamber 15 and from there further into the nozzles 10.
  • the end of the axle 2 is provided with an outlet opening 7, through which the return liquid coming along the outlet chamber 16 is removed.
  • openings 8 for the supply of cold liquid, from which the liquid is passed along the duct 19 into the cooling nozzle 9.
  • the space 20 between the axle 2 and the mantle 1′ is filled with liquid.
  • the inner axle 2 carries only the weight of the liquid and its own weight, and it is made of a plate cylinder or of some other, corresponding construction. Adjustable thermal insulations not shown in the figure) can be attached to the axle 2.
  • Fig. 2 illustrates the hollow inner axle 2 of the roll 1, in whose interior there is the hot-liquid chamber 15 attached by welding, which said chamber 15 communicates with the nozzles 10, through throttle pieces 17, and thereby with the space 20 between the mantle 1′ and the axle 2.
  • the return liquid is passed out of the space 20 between the mantle 1′ and the axle 2 through the opening 18 into the outlet chamber 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Replacement Of Web Rolls (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Claims (7)

  1. Walze oder Zylinder für eine Papiermaschine oder für eine Papieroberflächenbearbeitungsmaschine, insbesondere eine Kalanderwalze, die heizbar ist, wobei die Walze (1) einen zylindrischen Mantel (1') und eine innerhalb des Mantels (1') angebrachte feststehende Achse (2) hat, an welcher Achse (2) Düsen (10) montiert sind, die Flüssigkeit in einen, den Mantel und die Achse separierenden Raum (20) sprühen, um in Axialrichtung der Walze (1) ein gleichmäßiges Temperaturprofil mit einstellbarem Pegel zu erzeugen, dadurch gekennzeichnet, daß in beiden Enden der Achse (2) eine Zufuhröffnung (8), ein Leitungskanal (19) und eine Düse (9) für kalte Flüssigkeit für das Kühlen der Enden der Walze (1) vorgesehen sind, wobei der Raum (20) mit der Düse (9) für die kalte Flüssigkeit in Verbindung steht, daß die Achse (2) eine Zufuhröffnung (6) und eine Kammer (15) für heiße Flüssigkeit aufweist, mit deren Hilfe die heiße Flüssigkeit durch Drosselstücke (17) in die Düsen (10) geleitet wird, und daß die Achse (2) eine Flüssigkeitsauslaßöffnung (7) und eine Flüssigkeitsauslaßkammer (16) aufweist, mit deren Hilfe die gekühlte Flüssigkeit aus dem Raum (20) zwischen der Achse (2) und dem Mantel (1') entfernbar ist.
  2. Walze gemäß Patentanspruch 1, dadurch gekennzeichnet, daß die Achse (2) mit Hilfe von Stützteilen (4) an den Lagergehäusen (3) abgestützt ist.
  3. Walze gemäß Patentanspruch 1 oder 2, dadurch gekennzeichnet, daß, wenn die Walze in Betrieb ist, der Raum zwischen der Achse (2) und dem Mantel (1') mit Flüssigkeit gefüllt ist.
  4. Walze gemäß einem der Patentansprüche 1 bis 3, dadurch gekennzeichnet, daß die Achse (2) der Walze (1) hohl ist.
  5. Walze gemäß einem der Patentansprüche 1 bis 4, dadurch gekennzeichnet, daß die Düsen (10) in mehreren Axialreihen, vorzugsweise in 3 bis 6 symmetrischen Reihen, in Umfangsrichtung der Walze (1) gleichmäßig beabstandet montiert sind.
  6. Walze gemäß einem der Patentansprüche 1 bis 5, dadurch gekennzeichnet, daß einstellbare thermische Isolierungen der Seitenbereiche an der Achse (2) angebracht sind.
  7. Walze gemäß einem der Patentansprüche 1 bis 6, dadurch gekennzeichnet, daß die Walze bei verschiedenartigen Kalandrier-Anwendungen als eine beheizte Walze oder in der Trockenpartie einer Papiermaschine als ein Trockenzylinder verwendet wird.
EP89850084A 1988-03-14 1989-03-13 Rolle oder Zylinder für eine Papiermaschine oder für eine Maschine zur Fertigung von Papier Expired - Lifetime EP0333688B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI881196 1988-03-14
FI881196A FI82104C (fi) 1988-03-14 1988-03-14 Vals eller cylinder foer en pappersmaskin eller foer en efterbehandlingsmaskin foer papper.

Publications (3)

Publication Number Publication Date
EP0333688A2 EP0333688A2 (de) 1989-09-20
EP0333688A3 EP0333688A3 (de) 1991-05-08
EP0333688B1 true EP0333688B1 (de) 1996-05-29

Family

ID=8526080

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89850084A Expired - Lifetime EP0333688B1 (de) 1988-03-14 1989-03-13 Rolle oder Zylinder für eine Papiermaschine oder für eine Maschine zur Fertigung von Papier

Country Status (5)

Country Link
EP (1) EP0333688B1 (de)
CN (1) CN1036808A (de)
AT (1) ATE138705T1 (de)
DE (1) DE68926547T2 (de)
FI (1) FI82104C (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI87485C (fi) * 1991-01-07 1993-01-11 Valmet Paper Machinery Inc Boejningsreglerbar vals
IT1279895B1 (it) * 1995-12-22 1997-12-18 Deublin Sint S R L Dispositivo per introdurre un fluido ad elevata temperatura in un corpo rotante
FI20075869L (fi) * 2007-12-03 2009-06-04 Metso Paper Inc Kuiturainakoneen tela

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838734A (en) * 1973-01-22 1974-10-01 Beloit Corp Heat transfer roll body
DE2902956C2 (de) * 1979-01-23 1983-05-26 Escher Wyss AG, Zürich Beheizte Durchbiegungseinstellwalze
DE3014891A1 (de) * 1980-04-17 1981-10-22 Schwäbische Hüttenwerke GmbH, 7080 Aalen Vorrichtung mit einer mittels eines waermetraegers temperaturgeregelten hohlwalze
DE3526283A1 (de) * 1985-07-23 1987-02-05 Kleinewefers Gmbh Durchbiegungssteuerbare und beheizbare walze

Also Published As

Publication number Publication date
FI82104B (fi) 1990-09-28
ATE138705T1 (de) 1996-06-15
DE68926547T2 (de) 1996-10-24
FI881196L (fi) 1989-09-15
CN1036808A (zh) 1989-11-01
EP0333688A2 (de) 1989-09-20
EP0333688A3 (de) 1991-05-08
FI82104C (fi) 1991-01-10
FI881196A0 (fi) 1988-03-14
DE68926547D1 (de) 1996-07-04

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